NATURAL SCIENCES OF PHILADELPHIA. 46-3 



busque terminalibus, folio longioribus, appendicibus calycinis laaceolatis, 

 acutis, lobo duplo brevioribus. 



Western Texas. May. 



Stems 4 8 inches long ; leaves about an inch in length and nearly of the 

 same width ; petioles of the radical leaves 2 4 lines long ; peduncles about 

 an inch long; flowers large, pale blue. 



Nemophilla p i 1 o s a, s. n Canescenti-pilosiusculis, foliis alternatis, cau- 

 linibus sessilibus, radicalibus breviter petiolatis et lyrato-pinnati-partitis, 

 segmentis 5 15 ovatis vel lanceolatis, 2 5 acute-dentatis, racemis terminali- 

 bus laxifloris, calycinis sinubus appendicibus lanceolatislobo triplo brevioribus, 

 corolla profunde 5-fida rotata, calyce ciliata duplo longiore. 



Austin. April. 



Stems assurgent, 4 6 inches high, branching from the base ; petioles of 

 the radical leaves 4 12 lines long, and the leaves 1J 2J inches in length ; 

 peduncles 6 14 lines long; flowers purple. 



Phacelia (Cosmanthus) h i s p i d a, n. s. Hispida, foliis dentato-lobatis, 

 sessilibus, segmentis lato-ovatis, obtusiusculis vel lanceolatisque acutis, 

 racemis elongatis, terminalibus, lobis calycinis linearibus, corolla breviori- 

 bus, staminibus corollum subaequantibus. 



Austin. April. 



Stems ascending and branching, 6 8 inches high from the base ; sinuses 

 of the lobes extending scarcely half way to the midrib of the leaves ; leaves 

 1 1 inches long ; flowers blue. This plant resembles Phacelia P ur s h i i, 

 but is different in its non-fimbriate corolla, its leaves all being sessile, 

 with smaller and more obtuse lobes ; and the whole plant is much more 

 hispidly pilose. 



Description of a new QUADRUMANOUS MAMMAL, of the genus MIDAS. 



BY J. H. SLACK, M. D. 



Midas elegantulus. M. capite, collo, cauda, pedibusque nigris ; pilis 

 dorso nigris, apicibus canis ; abdomine rufescente ; macula verticale aureo rufes- 

 cente, labiis nasique apice albis. 



Hab. Amazon. 



Head, throat, anterior limbs, tail and hands, deep, glossy black ; hairs of 

 back, sides, and posterior limbs black, throughout most of their length tipped 

 with white, without regular annulations ; belly, breast, and internal surface of 

 limbs bright rust color, separated by a well defined line from the black of back 

 and external surface of limbs. Upon the back of the head is a small patch of 

 hairs, of similar coloration to those of the back ; and upon the vertex a small 

 triangular patch of golden yellow. The lips and tip of nose are white. 



This species is nearest allied to the M. my s tax Geoff., having, like that, 

 the bright rust colored belly, and black body and tail, but can readily be dis- 

 tinguished by the ashy tips of the hairs of the back and posterior limbs, and 

 the triangular golden spot upon the vertex ; the hairs of this spot are golden 

 throughout their entire length, in this respect resembling the M. chryso- 

 meles KuhL, and M. pileatus Geoff, and Deville, from both of which, 

 however, it can readily be distinguished by the color of the belly. The typical 

 specimen was procured by Lieut. Herndon, during his exploration of the Ama- 

 zon river and its tributaries. Its precise locality unfortunately being unknown. 

 The specimen is the skin of an adult male, and is the property of the Smithso- 

 nian Institution, by the Secretaries of which it was kindly loaned me for ex- 

 amination. 



1861.] 



